id:A076752 - OEIS Search Results

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Sum_{d is square divisor of n} n/d.

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1, 2, 3, 5, 5, 6, 7, 10, 10, 10, 11, 15, 13, 14, 15, 21, 17, 20, 19, 25, 21, 22, 23, 30, 26, 26, 30, 35, 29, 30, 31, 42, 33, 34, 35, 50, 37, 38, 39, 50, 41, 42, 43, 55, 50, 46, 47, 63, 50, 52, 51, 65, 53, 60, 55, 70, 57, 58, 59, 75, 61, 62, 70, 85, 65, 66, 67, 85, 69, 70, 71 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Multiplicative with a(p^e)=(p^(e+2)-1)/(p^2-1) for even e and a(p^e)=p*(p^(e+1)-1)/(p^2-1) for odd e.`
	CROSSREFS	`Cf. A035316.` `Sequence in context: A078903 A079228 A067535 this_sequence A079114 A058189 A069208` `Adjacent sequences: A076749 A076750 A076751 this_sequence A076753 A076754 A076755`
	KEYWORD	`mult,nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)Eunet.yu), Nov 12 2002`

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

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